Yeah it’s not made with that kind of logic in mind. Like they way the heroes actively waste time and risk their lives shooting at TIE Fighters instead of just jumping to hyperspace.
Also - wasn’t it the Noad System or is that a fresh idea for the mis-heard stuff thread?
Han said when they were leaving Tatooine hyperspace jump calculations take time. The Death Star might have even jumped since they were captured,(or traveled some distance from the Alderaan system) so extra time to figure out where they are and Yavin is probably not a destination one has preset coordinates for.
I presume Navi 'puters are faster and more precise three decades later.